George seiler and franklin emig



G..sB-1LER&P. BMIG., A MACHINE POR SEPARATING PULP PROM LIQUIDS.

G6936 Se,

` (No Model.)

d NTTED STATES PATENT Orricr.

GEORGE SEILER AND FRANKLIN EMIG, OF SPRING FORGE, PENNSYLVANIA,ASSIGNORS OF ONE-THIRD TO GEORGE G. WAGNER, OF SAME PLACE.

MACHINE FOR SEPARTING PULP FROM LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 514,780, dated February13, 1894.

Application iled April 10,1893. Serial No.46 9,764. (No model.)

To all whom, t may con/cern:

Be it known that we, GEORGE SEILER and FRANKLIN EMIG, citizens of theUnited States, residing at Spring Forge,in the county of York and Stateof Pennsylvania, have invented certain new and useful Improvements in Machines for Separating Pulp from Liquids; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as Will enable others skilled in the art to which it appertains tomake and use the same.

Our invention relates to a machine for recovering wood pulp from causticliquors with- :out the use of an undue or large quantity of water forwashing the pulp, and the machine may also be advantageously used forthe recovery of bark from the coloring matter or liquid used in barkmills.

The objects of our invention are to provide simple and efficient meanswhereby the caustic liquoris extracted or pressed from the wood pulp andthe liquor allowed to run off into one tank or compartment while thepulp is discharged from the pressure mechanism into 4anothercompartment, such operations and separation being elfected mechanicallyand expeditiously with the use of a very small proportion of water, orbyomitting the supply of Water altogether, thus effecting a saving notonly in the quantity of the pulp recovered from the caustic liquor butalso accomplish the end in a much shorter space of time and at a greatlyreduced cost.

Vlith these ends in view, our invention consists inthe combination withasuitable frame, a supply hopper therein, a set of co-acting pressurerolls supported in the frame below the supply hopper, a travelingcarrier arranged to travel between the upper and lower rolls of saidcoacting pressure rolls, a tank for receiving the liquid situatedbeneath one part of the carrier, and a water supply tank at or near thedischarge end of the traveling carrier for the purpose ofsupplying waterto the compressed pulp after it has passed between the pressure rollsandthe liquor eX- tracted therefrom, all as will be hereinafter more fullydescribed.

The invention furtherconsists in the novel combinations of devices andpeculiar construction Yand arrangement of parts as will be hereinaftermore fully described and particularly pointed out in the claims.

IVe have illustrated the preferred embodiment of our invention in theaccompanying drawings, forming a part of this specication, and inwhich-n Figure l is a side elevation,and Fig. 2 is a longitudinalcentral sectional view of our machine. Fig. 3 is an enlarged side viewof the upper part of the frame showing the removable bearing rails inwhich the supply hopper, the upper rolls of the coacting pressure rolls,and water tank and scraper knife are supported, to permit ready andconvenient access to any part of the machine.

Like lett-ers of reference denote corresponding parts in all the iiguresof the drawings, referring to which- A designates the main or supportingframe of the machine, which frame may be of any suitable or preferredconstruction adapted for the purpose of sustaining all the operativeparts or mechanisms for compressing and extracting pulp or bark fromtheliquors present therein. Atthe top side of this frame A, andpreferably near one end thereof, we provide a supply hopper B into whichthe pulp or bark is deposited by any suitable conveyer or in any othermanner. We preferably support this hopper on the frame in a manner topermit of the ready removal of the hopper, as will presently appear.

C is a traveling conveyer or apron which is arranged within the sidesand ends of the frame A, said apron or conveyer being situated in ahorizontal position on a plane beneath the hopper B so as to receive thepulp or bark from said hopper. We preferably make this traveling apronor conveyer of wire or reticulated, foraminous material, although anyother material suitable for the purpose of permitting the liquor orliquid matter to pass through the conveyer or apron after it has beenextracted or pressed from the pulp or bark, may be used. g

D,.D, are the set of coacting pressure rollers, D being the upper rolleror rollers, and D being the lower roller or rollers, of the set ofcoacting pressure rollers. This set of coroo nemploy a series of fourrollers, two being arranged above and the other two below the apron.This conveyer or apron C is arranged to travel or pass between the upperand lower rollers of the set of coacting pressure rollers, 'whereby theapron is niade to convey the pulp or bark from the hopper between theupper and lower rollers and thus the pulp or bark is subjected topressure between the uppei and lower rollers to force out the liquidpresent or contained in the pulp.

The set of pressure rollers are situated at one side of the supplyhopper, and at the other side of said pressure rollers from the supplyhopper is arranged a tank E, which is provided, on the side adjacent tothe pressure rollers, or in its bottom, with a discharge opening e. Thistank E is to be supplied with water, in order to be discharged into thepulp oi bark after it has been pressed by the rollers, so that the pulpor bark will contain sufficient water, or be in a semi-Huid state, forthe purpose of conveniently pumping the pulp or bark back to the mill byany suitable forni of pumping mechanism (not shown).

In the lower part of the frame, below the traveling conveyer or apron,and in vertical line with the supply hopper is a tank F in which thecaustic liquid or other liquid matter extracted from the wood pulporbark, is adapted to flow when it is pressed or extracted from the pulpor bark, and this receiving tank F has a vertical wallfat its inner end,which Wall serves to isolate the receiving tank F from the dischargechute G which is inclined downward from the wallf of said receiving tankand arranged below the discharge end of the conveyer or apron C toreceive the pulp or bark from the latter after it has been pressed byand between the coacting pressure rolls.

The conveyer or apron C is of the endless variety, and it is supportedat its ends by the power-driven and idler rollers H, Il', around whichthe endless conveyer or apron passes, and the shafts of these rollersIl, H are suitably journaled in bearings supported on the sides of theframe A, as shown, the shaft of the power-driven roller H being providedwith a pulley 7L around which passes a belt for communicating power tothe roller Il and thus to the apron.

On the sides of the frame A aie fitted the removable bearing rails I, I,of the machine, which bearing i'ails aie notched or provided with capswhich titover the shafts of the driv ing and idler rollers H, H', andthe shafts or trunnions of the lower rolls D', D' of the set of coactingpressure rollers. The bearing rails are fitted between the end pieces ofthe frame A, to which they are connected by slides or ways to preventlateral or sidewise displacement of said bearing rails, and they areprevented from vertical movement and held down in position by anysuitable fastenings. These bearing rails are further provided with theboxes or journal bearings for the shafts or truniiions of the upperrolls D, D, of the set of coacting pressure rolls, over which shafts ortrunnioiis are fitted the caps t, t, that hold the rolls D, D, in placeand which permit of the ready removal ofthe rails from their bearings inthe rails l, I.

The supply hopperB of the inacliiiieis fitted in place between theinclined ways ,7,j,.shown by full lines in Fig. 2 and by dotted lines inFig. l, said waysjbeing on the inner sides'of the rails I, I, so thatthe hopper can be readily lifted out of position between the rails I, I.Said hopper is further provided, in its bottom, or on the side adjacentto the roll D, with an outlet opening b, the area or size of which canbe regulated by means of the gatevalve K whi'cli is fitted to slidebetween the ways or strips 7a, 7c, attached to one side of the h opper.

The supply tank, for the water, E, is held in place by means of the lugsor flanges Z, Z, provided at the ends thereof, which lugs are fitted inplace in the openings formed in the retainers L, L, fixed to the upperside of the bearing rails I, I` suitable keys or wedges Z l', beinginserted between the retainers L and the lugs Z on the supply tank tohold the latter firmly, but detachably, in position.

In order to keep the upper roll D ofthe set of pressure rollers clear,and prevent wood pulp or bark from adhering to the surface of said roll,we provide the supply-tank E with a scraper or knife M which protectsfrom the lower part of the hopper until it terminates very close to thesurface of the roll D.

The rolls D, D, D', D', constituting the set of pressure rolls ai'egeared together s'o that they all rotate or turn in one direction, toeffect the compression of the pulp or bark, and thus extracttheliquidmatter therefrom; but in the drawings we have not deemed it necessary toillustrate fully this gearing as the same will be readily understood andsupplied by a mechanic skilled in the art.

This being the construction of oui` machine, the operation thereof maybe described as follows: Power is communicated by a belt to the drivingpulley of the shaft-roller II to move the endless conveyer or apron, andthe pressure rolls are also set in motion in any convenient Way. Thepulp and its caustic liquor, or the bark and coloring matter, aresupplied to the hopperB in any appropriate way while water is suppliedto the tank E. To feed the pulp or bark and their contained liquidmatter to the machine, the gate-valve of the supply hopper B is opened,and the pulp or bark with their liquid is allowed to pass through theopening b, in regulated quantities, and thusdeposited upon theforaminous or other form of conveyer or apron C. This conveyer transfersto the pressure rolls the pulp or bark, and as the matter is carriedthrough the machine by the apron or conveyer, the

IIO

liquid matter in the pulp or bark is extracted y or pressed therefrom.The liquid flows readily through or from the apron into the tank at thebottom of themaohine, while the solid particles of. wood pulp or barkare carried over the discharge end of the apron and deposited on theinclined discharge-chute, so that the pulp or bark and liquid aremechanically separated and discharged separately from the machine.` Y

We have found that-it will not be necessary to use any, or at most verylittle, water to effect the separation of the liquid matter from thesolid matter Aof the wood pulp or y bark; but to enable the pulp or barkto be lproportion of parts and details of construction of the mechanismherein shown and described as an embodiment of our invention can b emade without departing from the spirit or sacrificing the advantagesthereof, and we therefore reserve the right to make such modificationsor alterations as fairly fall within the scope of the invention.

In order to provide a proper support for the apron or conveyer, and toprevent the same from sagging, we may provide a series of two .or moresmall sustaining rollers N which are placed at one side of the set ofcoacting pressure rolls and are loosely jour` naled in bearings on thesides of the frame A of the machine. y

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is

1. In a machine for the purposes described, the combination with avsuitable frame, and a supply hopper, of a set of coacting pressurerolls, a conveyer arranged to travel between said pressure rolls andcarry the ksolid matter from vthe hopper to and through said pressurerolls, a liquidreceiving tank below one part ofthe'conveyer, and awater-supply tank ar.- ranged over the delivery part of the conveyer, atone side vof the pressure-rolls, to supply water to the solid matterafter it hasl passedV between the `rolls and the liquor expelledtherefrom, substantially as and for the purposes described.

2. In a machine for the purposes described,

' the combination with a suitable frame, of a supply hopper, a set ofcoacting pressure rolls, a conveyer arranged below said hopper andbetween said rolls, and alliquid supply tank arranged relatively'to saidapron and the pressure-rolls to su pplypa limited quantity ofwater tothe pulpor bark after its compression between said pressure-rolls,substantially as and for the purpose described.

3. In a machine for the purposes described, the combination with asuitable frame, and a supply hopper, of a set of coacting pressurerolls,a conveyer arranged-to travel between said pressure-rolls, the receivingtank below one part of the apron, a discharge vchute below the other endof the apron, a liquid supply-tank arranged to deliver liquid to thepulp or bark after its compression between said pressure-rolls, and ascraper or knife supported in position to clearthe upper pressurerollfrom pulp or bark that adheres thereto,` substantially as and for thepurpose described.

4. In a machine for the purposes described, the combination of anendless apron sup.- ported by the driving and idler rollers, the set ofcoacting pressure-rolls constructed for, positive rotation in onedirection and ar, ranged to bear against the lower and upper sides yofsaid apron, the supply hopper Vsituated above the apron at one side ofthe press urerolls, a supply tank likewise situated above theapronand'on the opposite side'fro'm the pressure-rolls, and the receiving anddischarge means for the pulp or bark and liquid below the apron,substantially as and for the purposes described; t

5. In a machine for.the purposes described, the combination of a frameprovided with the removable bearing rails, the endless apron having itsdriving and idler rollers journaled in the sides of the frame, the s etof coacting pressure rolls having the lower rolls journaled in the sidesof the. frame and its upper rolls journaledin the removable side rails,a supply hopper carried by said removable side rails, a supply tank alsocarried bysaidl bearing rails, and the receiving tank and dischargechute fixed to the sides of the frame below IOO the apron, substantiallyas and for `the purpose described. t 6. In a machine for the purposesdescribed, the combination of a main frame provided with the removablebearing rails`, a n endlessv apron having its driving and ,idlerrollersr journaled in the sides of thesmain frame, the coacting pressurerolls having its upperrolls journaled in the bearing rails and its lowerrolls journaled in the sides of the frame, aL supply hopper removablysupported between said bearing-rails, a supply tank detachably fastenedto the bearing rails, and the receiving tank and chute fixed tothe'frame below the apronl and atopposite ends thereof, sub-` stantiallyas and for the purpose described.

In testimony whereof we affix our signatures in presence of twowitnesses,

GEORGE SEILER.

FRANKLIN EMIG.

Witnesses:

,WILLIAM BAHN, JOHN S. MYERS.

